[PATCH 12/14] perf, tools: Add support for event list topics

From: Andi Kleen
Date: Sun May 31 2015 - 21:19:20 EST

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Add support to group the output of perf list by the Topic field
in the JSON file.

Example output:

% perf list
...
Cache:
l1d.replacement
[L1D data line replacements]
l1d_pend_miss.pending
[L1D miss oustandings duration in cycles]
l1d_pend_miss.pending_cycles
[Cycles with L1D load Misses outstanding]
l2_l1d_wb_rqsts.all
[Not rejected writebacks from L1D to L2 cache lines in any state]
l2_l1d_wb_rqsts.hit_e
[Not rejected writebacks from L1D to L2 cache lines in E state]
l2_l1d_wb_rqsts.hit_m
[Not rejected writebacks from L1D to L2 cache lines in M state]

...
Pipeline:
arith.fpu_div
[Divide operations executed]
arith.fpu_div_active
[Cycles when divider is busy executing divide operations]
baclears.any
[Counts the total number when the front end is resteered, mainly when the BPU cannot provide a correct prediction and this is corrected by
other branch handling mechanisms at the front end]
br_inst_exec.all_branches
[Speculative and retired branches]
br_inst_exec.all_conditional
[Speculative and retired macro-conditional branches]
br_inst_exec.all_direct_jmp
[Speculative and retired macro-unconditional branches excluding calls and indirects]
br_inst_exec.all_direct_near_call
[Speculative and retired direct near calls]
br_inst_exec.all_indirect_jump_non_call_ret

Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Signed-off-by: Sukadev Bhattiprolu <sukadev@xxxxxxxxxxxxxxxxxx>

Changelog[v2]
Dropped an unnecessary patch before this and fixed resulting
conflicts in tools/perf/util/pmu.c
---
tools/perf/pmu-events/jevents.c | 16 +++++++++++-----
tools/perf/pmu-events/jevents.h | 3 ++-
tools/perf/pmu-events/pmu-events.h | 1 +
tools/perf/util/pmu.c | 34 ++++++++++++++++++++++++----------
tools/perf/util/pmu.h | 1 +
5 files changed, 39 insertions(+), 16 deletions(-)

diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
index 8990d71..14707fb 100644
--- a/tools/perf/pmu-events/jevents.c
+++ b/tools/perf/pmu-events/jevents.c
@@ -203,7 +203,7 @@ static void print_events_table_prefix(FILE *fp, const char *tblname)
}

static int print_events_table_entry(void *data, char *name, char *event,
- char *desc, char *long_desc)
+ char *desc, char *long_desc, char *topic)
{
FILE *outfp = data;
/*
@@ -216,7 +216,9 @@ static int print_events_table_entry(void *data, char *name, char *event,
fprintf(outfp, "\t.event = \"%s\",\n", event);
fprintf(outfp, "\t.desc = \"%s\",\n", desc);
if (long_desc && long_desc[0])
- fprintf(outfp, "\t.long_desc = \"%s\"", long_desc);
+ fprintf(outfp, "\t.long_desc = \"%s\",\n", long_desc);
+ if (topic)
+ fprintf(outfp, "\t.topic = \"%s\",\n", topic);
fprintf(outfp, "},\n");

return 0;
@@ -236,7 +238,8 @@ static void print_events_table_suffix(FILE *outfp)

/* Call func with each event in the json file */
int json_events(const char *fn,
- int (*func)(void *data, char *name, char *event, char *desc, char *long_desc),
+ int (*func)(void *data, char *name, char *event, char *desc,
+ char *long_desc, char *topic),
void *data)
{
int err = -EIO;
@@ -255,7 +258,7 @@ int json_events(const char *fn,
tok = tokens + 1;
for (i = 0; i < tokens->size; i++) {
char *event = NULL, *desc = NULL, *name = NULL, *long_desc = NULL;
- char *extra_desc = NULL;
+ char *extra_desc = NULL, *topic = NULL;
struct msrmap *msr = NULL;
jsmntok_t *msrval = NULL;
jsmntok_t *precise = NULL;
@@ -294,6 +297,8 @@ int json_events(const char *fn,
!json_streq(map, val, "null")) {
addfield(map, &extra_desc, ". ",
" Spec update: ", val);
+ } else if (json_streq(map, field, "Topic")) {
+ addfield(map, &topic, "", "", val);
} else if (json_streq(map, field, "Data_LA") && nz) {
addfield(map, &extra_desc, ". ",
" Supports address when precise",
@@ -316,12 +321,13 @@ int json_events(const char *fn,
if (msr != NULL)
addfield(map, &event, ",", msr->pname, msrval);
fixname(name);
- err = func(data, name, event, desc, long_desc);
+ err = func(data, name, event, desc, long_desc, topic);
free(event);
free(desc);
free(name);
free(extra_desc);
free(long_desc);
+ free(topic);
if (err)
break;
tok += j;
diff --git a/tools/perf/pmu-events/jevents.h b/tools/perf/pmu-events/jevents.h
index 2168ad4..a556ab1 100644
--- a/tools/perf/pmu-events/jevents.h
+++ b/tools/perf/pmu-events/jevents.h
@@ -2,7 +2,8 @@
#define JEVENTS_H 1

int json_events(const char *fn,
- int (*func)(void *data, char *name, char *event, char *desc, char *long_desc),
+ int (*func)(void *data, char *name, char *event, char *desc,
+ char *long_desc, char *topic),
void *data);
char *get_cpu_str(void);

diff --git a/tools/perf/pmu-events/pmu-events.h b/tools/perf/pmu-events/pmu-events.h
index 711f049..6b69f4b 100644
--- a/tools/perf/pmu-events/pmu-events.h
+++ b/tools/perf/pmu-events/pmu-events.h
@@ -9,6 +9,7 @@ struct pmu_event {
const char *event;
const char *desc;
const char *long_desc;
+ const char *topic;
};

/*
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index a4e49c5..8170dce 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -209,7 +209,7 @@ static int perf_pmu__parse_snapshot(struct perf_pmu_alias *alias,
}

static int __perf_pmu__new_alias(struct list_head *list, char *name, char *dir, char *desc __maybe_unused, char *val,
- char *long_desc)
+ char *long_desc, char *topic)
{
struct perf_pmu_alias *alias;
int ret;
@@ -245,6 +245,7 @@ static int __perf_pmu__new_alias(struct list_head *list, char *name, char *dir,
alias->long_desc = long_desc ?
strdup(long_desc) :
desc ? strdup(desc) : NULL;
+ alias->topic = topic ? strdup(topic) : NULL;

list_add_tail(&alias->list, list);

@@ -261,7 +262,7 @@ static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FI
return -EINVAL;
buf[ret] = 0;

- return __perf_pmu__new_alias(list, name, dir, NULL, buf, NULL);
+ return __perf_pmu__new_alias(list, name, dir, NULL, buf, NULL, NULL);
}

static inline bool pmu_alias_info_file(char *name)
@@ -518,7 +519,8 @@ static int pmu_add_cpu_aliases(void *data)
/* need type casts to override 'const' */
__perf_pmu__new_alias(head, (char *)pe->name, NULL,
(char *)pe->desc, (char *)pe->event,
- (char *)pe->long_desc);
+ (char *)pe->long_desc,
+ (char *)pe->topic);
}

out:
@@ -1002,19 +1004,25 @@ static char *format_alias_or(char *buf, int len, struct perf_pmu *pmu,
return buf;
}

-struct pair {
+struct sevent {
char *name;
char *desc;
+ char *topic;
};

-static int cmp_pair(const void *a, const void *b)
+static int cmp_sevent(const void *a, const void *b)
{
- const struct pair *as = a;
- const struct pair *bs = b;
+ const struct sevent *as = a;
+ const struct sevent *bs = b;

/* Put extra events last */
if (!!as->desc != !!bs->desc)
return !!as->desc - !!bs->desc;
+ if (as->topic && bs->topic) {
+ int n = strcmp(as->topic, bs->topic);
+ if (n)
+ return n;
+ }
return strcmp(as->name, bs->name);
}

@@ -1048,9 +1056,10 @@ void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
char buf[1024];
int printed = 0;
int len, j;
- struct pair *aliases;
+ struct sevent *aliases;
int numdesc = 0;
int columns = pager_get_columns();
+ char *topic = NULL;

pmu = NULL;
len = 0;
@@ -1060,7 +1069,7 @@ void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
if (pmu->selectable)
len++;
}
- aliases = zalloc(sizeof(struct pair) * len);
+ aliases = zalloc(sizeof(struct sevent) * len);
if (!aliases)
goto out_enomem;
pmu = NULL;
@@ -1088,6 +1097,7 @@ void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
/* failure harmless */
aliases[j].desc = long_desc ? alias->long_desc :
alias->desc;
+ aliases[j].topic = alias->topic;
j++;
}
if (pmu->selectable) {
@@ -1099,7 +1109,7 @@ void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
}
}
len = j;
- qsort(aliases, len, sizeof(struct pair), cmp_pair);
+ qsort(aliases, len, sizeof(struct sevent), cmp_sevent);
for (j = 0; j < len; j++) {
if (name_only) {
printf("%s ", aliases[j].name);
@@ -1108,6 +1118,10 @@ void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
if (aliases[j].desc && !quiet_flag) {
if (numdesc++ == 0)
printf("\n");
+ if (aliases[j].topic && (!topic || strcmp(topic, aliases[j].topic))) {
+ printf("%s%s:\n", topic ? "\n" : "", aliases[j].topic);
+ topic = aliases[j].topic;
+ }
printf(" %-50s\n", aliases[j].name);
printf("%*s", 8, "[");
wordwrap(aliases[j].desc, 8, columns, 0);
diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h
index 1c95477..2d0aab3 100644
--- a/tools/perf/util/pmu.h
+++ b/tools/perf/util/pmu.h
@@ -40,6 +40,7 @@ struct perf_pmu_alias {
char *name;
char *desc;
char *long_desc;
+ char *topic;
struct list_head terms; /* HEAD struct parse_events_term -> list */
struct list_head list; /* ELEM */
char unit[UNIT_MAX_LEN+1];
--
1.8.3.1

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Next message: Greg Kroah-Hartman: "Re: [PATCH] staging: wlan-ng: fix long line"
Previous message: mliska: "[PATCH] perf annotate: With --show-total-period, display total # of samples."
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]